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Cataplexy |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.01 sec. |
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cataplexy /cat·a·plexy/ (kat´ah-plek?se) a condition marked by abrupt attacks of muscular weakness and hypotonia triggered by such emotional stimuli as mirth, anger, fear, etc., often associated with narcolepsy.cataplec´tic
Cataplexy A symptom of narcolepsy in which there is a sudden episode of muscle weakness triggered by emotions. The muscle weakness may cause the person's knees to buckle, or the head to drop. In severe cases, the patient may become paralyzed for a few seconds to minutes. Mentioned in: Narcolepsy, Sleep Disorders cataplexy a condition, often associated with narcolepsy; marked by abrupt attacks of a loss of voluntary muscular function (flaccid paralysis), except those controlling respiration and eye movement. Observed in dogs, cats and horses, especially Shetland ponies. In dogs these have been precipitated by extreme excitement, vigorous physical or sexual activity. Usually of short duration. Most cases are idiopathic, but can be associated with lesions of the brainstem. food-elicited cataplexy test cataleptic dogs demonstrate repeated attacks of catalepsy when presented with several individual pieces of food. |
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? Mentioned in | ? References in periodicals archive | |
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Unlike orexin-deficient mice, which are narcoleptic and cataplectic, the new mice sleep and act normally. The cataplectic attack may involve only a slight feeling of weakness and limp muscles (i. Some of the episodes might also be cataplectic events, notes Yanagisawa. |
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